Liz had always dreamed of becoming a great magical tool maker, but she spent her life working as a maid in her family's shop, barely getting enough to eat. Her older sister claimed Liz's achievements as her own and gained the admiration of the crown prince—eventually becoming his fiancée. While preparing for the engagement ceremony, Liz collapsed from exhaustion. When she woke up, she found herself face-to-face with a famous duke known for his magical prowess, who was impressed by her talent and saw her as a legendary magical tool maker. To help her break free from her unfair family, he proposed a fake engagement—and thus, a new chapter in Liz's life began.